What causes a SPN 464 code?

SPN 464 can be triggered by several issues — see the verified probable causes and step-by-step diagnostics shared by mechanics and owners on OBDIY.

Can I drive with a SPN 464 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 464 active.

How do I fix SPN 464?

Follow the step-by-step diagnostic on this page, then read the verified fixes contributed by other Heavy Truck owners — the answer marked "Verified Cause" worked for the original poster.

OBDIY

J1939 SPN

SPN 464

J1939 SPN 464 — Fuel/Air parameter

What it means

SPN 464 is a generic J1939 fault relating to Engine Oil Parameters (Pressure or Temperature) depending on the FMI. It indicates the sensor reading is out of expected operating range.